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Deprecate and remove in-memory object caching (#5481)

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in-memory caching cannot be cleanly implemented
without the access to GC which Go doesn't naturally
provide. At times we have seen that object caching
is more of an hindrance rather than a boon for
our use cases.

Removing it completely from our implementation
  related to #5160 and #5182
This commit is contained in:
Harshavardhana
2018-02-02 10:17:13 -08:00
committed by kannappanr
parent 1ebbc2ce88
commit 0c880bb852
15 changed files with 4 additions and 1022 deletions
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16
cmd/object-api-getobject_test.go
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@@ -106,14 +106,6 @@ func testGetObject(obj ObjectLayer, instanceType string, t TestErrHandler) {
// Test case - 5.
// Case with invalid object names.
{bucketName, "", 0, 0, nil, nil, false, []byte(""), fmt.Errorf("%s", "Object name invalid: "+bucketName+"#")},
// Test case - 6.
// Valid object and bucket names but non-existent bucket.
// {"abc", "def", 0, 0, nil, nil, false, []byte(""), fmt.Errorf("%s", "Bucket not found: abc")},
// A custom writer is sent as an argument.
// Its designed to return a EOF error after reading `n` bytes, where `n` is the argument when initializing the EOF writer.
// This is to simulate the case of cache not filling up completly, since the EOFWriter doesn't allow the write to complete,
// the cache gets filled up with partial data. The following up test case will read the object completly, tests the
// purging of the cache during the incomplete write.
// Test case - 7.
{bucketName, objectName, 0, int64(len(bytesData[0].byteData)), buffers[0], NewEOFWriter(buffers[0], 100), false, []byte{}, io.EOF},
// Test case with start offset set to 0 and length set to size of the object.
@@ -374,14 +366,6 @@ func testGetObjectDiskNotFound(obj ObjectLayer, instanceType string, disks []str
// Test case - 5.
// Case with invalid object names.
{bucketName, "", 0, 0, nil, nil, false, []byte(""), fmt.Errorf("%s", "Object name invalid: "+bucketName+"#")},
// Test case - 6.
// Valid object and bucket names but non-existent bucket.
// {"abc", "def", 0, 0, nil, nil, false, []byte(""), fmt.Errorf("%s", "Bucket not found: abc")},
// A custom writer is sent as an argument.
// Its designed to return a EOF error after reading `n` bytes, where `n` is the argument when initializing the EOF writer.
// This is to simulate the case of cache not filling up completly, since the EOFWriter doesn't allow the write to complete,
// the cache gets filled up with partial data. The following up test case will read the object completly, tests the
// purging of the cache during the incomplete write.
// Test case - 7.
{bucketName, objectName, 0, int64(len(bytesData[0].byteData)), buffers[0], NewEOFWriter(buffers[0], 100), false, []byte{}, io.EOF},
// Test case with start offset set to 0 and length set to size of the object.